Zero Jitter ISR for STM32F051

Hi,On STM32F051 I am trying to implement zero jitter interrupt servce routine for TIM6. I understand in Cortex-M0 architecture, there is a way to set higher IRQ latency to achieve zero jitter. I am not able to locate the registers for this value in STM32F051. I am not sure if the feature is implemented by ST.Can somebody guide me. Thank you